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[1] Zhang Jin, Xiao Guomin, Liang Henghong,. Study on catalyst for pyridine synthesis [J]. Journal of Southeast University (English Edition), 2004, 20 (1): 62-64. [doi:10.3969/j.issn.1003-7985.2004.01.013]
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Study on catalyst for pyridine synthesis()
合成吡啶催化剂的研究
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
20
Issue:
2004 1
Page:
62-64
Research Field:
Chemistry and Chemical Engineering
Publishing date:
2004-03-30

Info

Title:
Study on catalyst for pyridine synthesis
合成吡啶催化剂的研究
Author(s):
Zhang Jin;  Xiao Guomin;  Liang Henghong
Department of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, China
张进;  肖国民;  梁衡弘
东南大学化学化工系, 南京 210096
Keywords:
pyridine;  catalyst;  ZSM-5
吡啶;  催化剂;  ZSM-5
PACS:
TQ253.2
DOI:
10.3969/j.issn.1003-7985.2004.01.013
Abstract:
The synthesis of pyridine from aldehydes and ammonia was performed over ZSM-5 catalyst. The catalytic activity in reaction was correlated with the acidity of the zeolite catalysts. In this study a few of ZSM-5( m( SiO2)/m(Al2O3)=120)were prepared and modified with Co2+, Fe3+. The surface acidity was determined by Py-IR technique. It was found that CoZSM-5 and FeZSM-5 have fewer Lewis acid sites than HZSM-5. The decrease of Lewis acid sites leads to decreasing the ability of NH3 adsorption, this phenomenon insures that there are adequate acid sites discovering and reacting with aldehydes. It is advantageous to the reaction. By using a CoZSM-5 catalyst, the yields of pyridine base can reach 78%. The study provides a theoretical base for preparing high activity and high selective catalyst for pyridine synthesis.
醛(酮)氨法合成吡啶可用ZSM-5作催化剂, 本文研究了ZSM-5催化剂的表面酸性与催化合成吡啶活性之间的关系.合成了硅铝质量比为120的ZSM-5, 并用钴、铁对其进行改性, 用吡啶红外光谱技术测定了ZSM-5的表面酸性.研究表明用Co2+, Fe3+ 离子对HZSM-5进行改性, Lewis酸中心明显减少, 对氨的吸附能力下降, 这种现象保证了足够多的酸中心暴露和醛反应, 有利于吡啶碱的形成, 吡啶碱产率可达78%.该研究为制备高活性、高选择性的合成吡啶催化剂提供了理论依据.

References:

[1] Antero L, Marko M. Separation of pyridine or pyridine derivatives from aqueous solution [P]. US 6087507. 2000-07-01.
[2] McAteer C H, Brown D C, Davis R, et al. Gas-phase preparation of pyridine and alkylpyridines [P]. US 5780635. 1998-07-14.
[3] Chitnis G K, Kowalski J A, Williams M, et al. Process and zeolite-phosphorus catalysts for the manufacture of pyridines and picolines from the cyclocondensation of ammonia and C1-5 carbonyl compounds [P]. US 5994550. 1999-11-30.
[4] Morihito S, Yasutaka T. Preparation of pyridine bases [P]. JP 11209346. 1999-08-03.
[5] Angevine P J, Cynthia T W, Potter T C. Synthesis of pyridine and 3-alkylpyridine via zeolite-catalyzed [P]. US 5395940. 1995-05-07.
[6] Golunski S E, Jackson D. Heterogeneous conversion of acyclic compounds to pyridine bases[J]. Appl Cata, 1986, 23(3): 1-14.

Memo

Memo:
Biographies: Zhang Jin(1969—), female, graduate; Xiao Guomin(corresponding author), male, doctor, professor, xiaogm@seu.edu.cn.
Last Update: 2004-03-20